soc: ti: Add wkup_m3_ipc driver
Introduce a wkup_m3_ipc driver to handle communication between the MPU
and Cortex M3 wkup_m3 present on am335x.
This driver is responsible for actually booting the wkup_m3_rproc and
also handling all IPC which is done using the IPC registers in the control
module, a mailbox, and a separate interrupt back from the wkup_m3. A small
API is exposed for executing specific power commands, which include
configuring for low power mode, request a transition to a low power mode,
and status info on a previous transition.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig
index 7266b21..3557c5e 100644
--- a/drivers/soc/ti/Kconfig
+++ b/drivers/soc/ti/Kconfig
@@ -28,4 +28,14 @@
If unsure, say N.
+config WKUP_M3_IPC
+ tristate "TI AMx3 Wkup-M3 IPC Driver"
+ depends on WKUP_M3_RPROC
+ depends on OMAP2PLUS_MBOX
+ help
+ TI AM33XX and AM43XX have a Cortex M3, the Wakeup M3, to handle
+ low power transitions. This IPC driver provides the necessary API
+ to communicate and use the Wakeup M3 for PM features like suspend
+ resume and boots it using wkup_m3_rproc driver.
+
endif # SOC_TI